rust/tests/ui/const-generics/sneaky-array-repeat-expr.rs

trait Trait<const N: usize> {
    const Assoc: usize;
}

impl<const N: usize> Trait<N> for () {
    const Assoc: usize = 1;
}


pub const fn foo<const N: usize>() where (): Trait<N> {
    let bar = [(); <()>::Assoc];
    //~^ error: constant expression depends on a generic parameter
    //~| error: constant expression depends on a generic parameter
}

trait Trait2<const N: usize> {
    const Assoc2: usize;
}

impl<const N: usize> Trait2<N> for () {
    const Assoc2: usize = N - 1;
}


pub const fn foo2<const N: usize>() where (): Trait2<N> {
    let bar2 = [(); <()>::Assoc2];
    //~^ error: constant expression depends on a generic parameter
    //~| error: constant expression depends on a generic parameter
}

fn main() {
    foo::<0>();
    foo2::<0>();
}